ASTROSAT CZTI

Data Quality Report

Orbit 33325

Creation date: 2024-06-27T20:47:35.434633
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_071T01_9000004782_33325cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33325cztM0_level2_quad_clean.evt
Size (bytes)568,972,80067,248,000
Size542.6 MB 64.1 MB
Events in quadrant A2,643,658452,499
Events in quadrant B4,922,769396,796
Events in quadrant C4,607,527405,066
Events in quadrant D4,700,264411,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109893
B0180202
C0172292
D0175712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5278150.284199%
B527899918.927624%
C52784368.260705%
D52791552.936162%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7071 5279 8 8 0.11% 0.15%
B 7071 5279 538 538 7.61% 10.19%
C 7071 5279 362 362 5.12% 6.86%
D 7072 5280 136 136 1.92% 2.58%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 106978 843.14 629 617 126.1
A 12 16 81076 637.81 629 617 126.1
A 12 194 17459 133.51 629 617 126.1
B 0 219 1306767 11931.69 580 566 109.5
B 5 172 1253075 11441.23 580 566 109.5
B 15 85 46433 418.97 580 566 109.5
C 10 49 1241817 9284.37 585 592 133.7
C 1 23 385627 2880.06 585 592 133.7
C 15 214 241426 1801.44 585 592 133.7
D 8 195 1462020 9321.38 600 586 156.8
D 12 233 492832 3139.67 600 586 156.8
D 2 250 205986 1310.09 600 586 156.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter